not attempted a complete application of his principle, and indeed gave it up at the very threshold of the Grecian philosophy. To the Eleatics, the Heraclitics and the Atomists, the logical categories of “being,” “becoming,” and being _per se_ may be successively ascribed, and so far, as already remarked, the parallelism extends, but no farther. Not only does Anaxagoras follow with the conception of reason working according to an end, but if we go back before the Eleatics, we find in the very beginning of philosophy a total diversity between the logical and historical order. If Hegel had carried out his principle consistently, he should have thrown away entirely the Ionic philosophy, for matter is no logical category; he should have placed the Pythagoreans after the Eleatics and the Atomists, for in logical order the categories of quantity follow those of quality; in short, he would have been obliged to set aside all chronology. Unless this be done, we must be satisfied with a theoretical reproduction of the course which the thinking spirit has taken in its history, only so far as we can see in the grand stages of history a rational progress of thought; only so far as the philosophical historian, surveying a period of development, actually finds in it a philosophical acquisition,—the acquisition of a new idea: but we must guard ourselves against applying to the transition and intermediate steps, as well as to the whole detail of history, the postulate of an immanent conformity to law, or an organism in harmony with our own thoughts. History often winds its way like a serpent in lines which appear retrogressive, and philosophy, especially, has not seldom withdrawn herself from a wide and already fruitful field, in order to settle down upon a narrow strip of land, the limits even of which she has sought still more closely to abridge. At one time we find thousands of years expended in fruitless attempts with only a negative result;—at another, a fulness of philosophical ideas are crowded together in the experience of a lifetime. There is here no sway of an immutable and regularly returning law, but history, as the realm of freedom, will first completely manifest itself at the end of time as the work of reason. SECTION II. CLASSIFICATION.